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Finding the Fourth Proportional to 7,034.35, 9,707.48 and 3,890.65

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Solution

The fourth proportional to 7,034.35, 9,707.48 and 3,890.65 is: 5,369.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,034.35 : 9,707.48 = 3,890.65 : x
  2. Step 2: Convert to fraction form
    7,034.35/9,707.48 = 3,890.65/x
  3. Step 3: Cross multiply
    7,034.35x = 9,707.48 × 3,890.65
  4. Step 4: Simplify right side
    7,034.35x = 37,768,407.06
  5. Step 5: Solve for x
    x = 37,768,407.06/7,034.35
  6. Step 6: Final answer
    x = 5,369.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.